Shock filter coupled to curvature diffusion for image denoising and sharpening

Authors:
Salim Bettahar;Amine Boudghene Stambouli
Affiliations:
Electronics Department, Electrical and Electronics Engineering Faculty, University of Sciences and Technology of Oran, P.O. Box 1505 El M'naouar, Oran, Algeria;Electronics Department, Electrical and Electronics Engineering Faculty, University of Sciences and Technology of Oran, P.O. Box 1505 El M'naouar, Oran, Algeria
Venue:
Image and Vision Computing
Year:
2008

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Abstract

The frequent problem in low-level vision arises from the goal to eliminate noise and uninteresting details from an image, without blurring semantically important structures such as edges. Partial differential equations (PDEs) have recently dominated image processing research, as a very good tool for noise elimination, image enhancement and edge detection. In this paper, we present a biased PDE filter based on a coupling between shock filter and curvature diffusion. This model removes noise and sharpens edges efficiently. It preserves well the location of the shocks by synchronising both effects of smoothing and deblurring. Empirical results on different kinds of images confirm these advantages.